A hybrid power generation plant system and method are disclosed, the system including but not limited to a plurality of diesel engines; an electrical bus switchably attached to the diesel engines, batteries switchably attached to the electrical bus; a tug boat propulsion load attached to the electrical bus; a diesel engine and a battery; a processor the executes a computer program; instructions to determine a current system load serviced by power provided from the hybrid power source; instructions to determine a current operating state for the diesel engine and the battery; instructions to determine a new operating state for the diesel engine and the battery to reduce power consumption servicing the current system load the diesel engine and the battery; and instructions to replace the current operating state for the diesel engine and the battery to the new operating state for the diesel engine and the battery.

A method of operating a vessel includes providing hydrogen or a fuel mixture containing hydrogen and a hydrocarbon fuel to a power generator disposed on the vessel, and providing power from the power generator to an electrical load of the vessel.

A drive system mounted to the hull of a buoyant vessel, the drive system having a rectifier, a generator, an AC bus in communication with shore power or a charging system and the rectifier, a DC bus in communication with the rectifier, at least one energy storage system, an inverter, a prime mover, a load regenerating device, and a control and monitor system which has predefined specifications for at least one of: storage units of at least one energy storage system; stored therein and wherein the control and monitor system is adapted to: automatically control the DC/DC converters, relieve a current draw from one or more storage units, provide charging current, and automatically draw power and redirect energy.

An engine device including an intake manifold configured to supply air into a cylinder; an exhaust manifold configured to output exhaust gas from the cylinder; a gas injector which mixes a gaseous fuel with the air supplied from the intake manifold; and a main fuel injection valve configured to inject a liquid fuel into the cylinder for combustion. At the time of switching from a gas mode in which the gaseous fuel is supplied into the cylinder to a diesel mode in which the liquid fuel is supplied into the cylinder, a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.

A watercraft and method for operating the watercraft, wherein the watercraft includes an electrical system that is present in a space that has an atmosphere that differs from air, where the space is formable by a pressure hull, where the atmosphere contains, for example, an inert gas, and where the space having the electrical system is filled with the atmosphere.

An object of the present disclosure is to provide a gas-electric parallel-serial hybrid marine power train system with LNG cooling, including a gas engine, an electric generator, a motor, a natural gas storage supplier. The gas engine is connected to the shaft belt motor through a gearbox, the motor is connected to the gearbox through a clutch, propellers are connected to the motor, and an engine cooling system and a fuel cell cooling system are connected to an LNG vaporization heat exchange apparatus; the electrical energy sources are the fuel cell, the electric generator and a storage battery. The arrangement of multiple power sources according to the present disclosure can meet ship requirements under various environments and circumstances, improve operating efficiencies of the gas engine, the shaft belt motor and the electric motor.

A propulsion system for a marine vessel having a first driveline assembly having a first engine and a first motor-generator, a second driveline assembly having a second engine and second motor-generator, and a controller configured to operate of the assemblies in a split mode. The split mode includes the first driveline assembly being driven by the first engine without torque assistance from the first motor-generator and the second driveline assembly being driven by the second motor-generator without torque assistance from the second engine and includes the first motor generator providing electrical power to the marine vessel grid for consumption.

A novel emissions control watercraft (STAXcraft) solving a long-felt but unsolved need regarding disadvantages associated with prior-art emissions servicing watercraft, the disadvantages selected from the group, but not limited to, the use of tugboats, securing or mooring servicing watercraft to a serviced vessel, additional expenses and time-delays and inefficiencies of land-based approaches, increased toxic emissions, increased greenhouse gases (GHG) emissions, danger from falling cargo, tanker safety, alongside mooring in narrow channels preventing other OGV's to pass safely, and cargo tank emissions.

A propulsion system for a marine vessel having a first driveline assembly having a first engine and a first motor-generator, a second driveline assembly having a second engine and second motor-generator, and a controller configured to operate of the assemblies in a split mode. The split mode includes the first driveline assembly being driven by the first engine without torque assistance from the first motor-generator and the second driveline assembly being driven by the second motor-generator without torque assistance from the second engine and includes the first motor generator providing electrical power to the marine vessel grid for consumption.

A marine vessel, system, and process provides for reducing or eliminating fuel consumption and emissions of marine vessels. System and method for charging an electricity storage element of an energy storage system of a floating marine vessel may include applying a power source from a marine platform to an electrical power bus of the floating vessel to charge the electricity storage element. A power generator of the marine vessel configured to supply electrical power to the power bus may be configured from an ON state to an OFF state.